Loom-stopping mechanism.



A. KOEGHLIN.- LOOM STOPPING MEGHANISM. APPLICATION FLEDJ'ULY 23, 19H).A

Patented Deo. 23, 1913 UNiTED STATES PATENT oEEioE.

ALBERT GEOG KOECHLIN, OF STEINEN, GERMANY, ASSIGNOR TO DRAPER COMPANY,

l 0F HOPEDALE, INIASSACHUSETTS, A CORPORATION OF MAINE.

LOOM-STOPPING MECHANISM. i

LIN, a citizen of the Republic of Swilzer` r land, residing at Steinen,Grand Duchy of Baden,-Germany, have invented certain newand usefulImprovements in Loom-Stopping Mechanism, of which the"`\following is aspecification. 1,

In automatic weft-replenish'ing looms, it sometimes occurs that thev'veft is replenished too frequently owing to the breakage of thethread, the vimperfect actionof the wett replenishing mechanism, andotherwise, so that the reserve supply of weft is rapidly exhaustedentailing additional labor, and

cloth having undue defects`or blemishes is woven. It is important,therefore, that theloom should be automatically stopped in the event ofsuch .too frequent actions ot the weft replenishing mechanism Ain orderthat 'the cause may be discovered and remedie-.l

and the proper character ofcloth may be woven.

The present invention, therefore, hasfoi: its object the automaticstopping of the loom in the event that the replenishment occurs with toogreat frequency.

The present improved stopping merlinnsm is illustrated in theaccompanying drawings, wherein- Figure 1, is a diagram illustrating theiinproved mechanism. Fig. 2, is a horizontal cross-section of theshipper lever .showing the catch or notch for holding it in its posi/VTtion whilethe loom is running. Fig. 3, is a side elevation ofthe stopcontrolling meehanism. Fig, is a front elevation ofthe stop controllingmechanism.

The framework of the loom is indicated at a and on a part 5f lthe frameis located a mechanism. This mechanism comprises 'a controller f which1s fixed to a ratchet wheel c on a Shaft b1. This controller f isinitially held against a stop/"l by' means of a. coiled spring shownbest in Fig. 3.4 This'com troller f is advanced step-ny-stop by'actn-Specification-of Letters Patent.

Application filed July 23,A

Patented Dec. 23, 1 91 3. 1910. seria1N0.573,52s.

ing means which, as illustrated, are electrical in character.

The bracket' which is ot metal, is insulated from the framework of theloom and is in metallic contact with controller f. This bracket, andhence the controller, arc ronnccted with one pole of an electric sourcef/ is insulated from the hrm-'ret 7; and trozn it leads a circuit wire7i. 'lhis wire /L and a circuit Wire /U extending from the opposite poleof the `electric seo'urce4 Z' extend to el=.-ctric terminals whichcoiperate with two C01:- ltaet springs r, o', carried by the shipperlever. i These spring contacts ronneet `with opposite poles of anelectric magnet. z' also carried by the shipper level'. The electricclosed h v the controller f touching the contact ,r/ then theeloctrormignet iis energized, -therclrv lifting its piroied armature minto the path of a sliding-hinder n pivotally eon ner-ted to the upperend of a crank arm o on the lay, rock shaft ol. Accordingly, at (he nextforward heat of the lay, the hunter n encounters the armature m andpushes the chipper lever 77 out of its holding notch q (Fig. 2l and theloom is stopped in a usual manner hy the customary connerl'ioushetweenthe shipper lever and the direct stopping mechanism of the loom which isnot shown because of \:elll-:no\\'n character.

f is governed by an actuator e, which vis moved each time that the weftis replenished. The actuator e consists of 'a pawl which is pivoted upona lever di which is itself pivoted upon the ratchet shaft 7).-

wheel c by means of a spring z. The upper end ofthe lever'al2 isconnected hy a link Z3 with the lower end of a crank arm (Z1. The upperend of this crank arm is fastened upon a rock shaft d. This rock shaftis a shaft which is rocked each time that the weft is automaticallyreplenished in unison with a rock shaft such as shown at 14, in UnitedStates Letters Patent No. 971,541., granted October 4, 1910, to myselfor such as the rock shaft Z1 of United States Letters Patent ofNorthrop, Jo. 529,940, November 27, 1894. The rock shaft d shown in theaccompanying drawings can he connected with the customary rock shaft,such The-step-hy-step advance of thc'controller by means of the circuitwire Z.' 'lhe contact circuit is normallv open, hut when it is,l

T he actuator e is pressed toward the ratchet Y as shown in the patentsjust mentioned, by any suitable intervening connections, such forexample, as the cranks 3 Vand (5 and the link 4 which connect the rockshafts 1 0() and 7l shown in the United States Letters Patent ofIlntwislc, No.- 841,492, .,Tauuary lo,l

'-li'ftcr y may be a pin, rigidly secufwl 'to the bracket b as shown inFig. 1, or it. nnle the free end of, an adjusting screw as' .shown inFig. 4, this adjustment regulating the number of teeth'on -the ratchetwhich the actuator rides ,over on its return stroke,

thereby determining the extent of the ad- '.'vance steps of thecontroller f and hence the number of stepswliich the controller takes inmoving from its initial position to its position-Where it touchestheelectric cou.- tact g. When'the rock' shaft l oscillates (which occurswhen the weft is replenished in the usual: well-known manner) it ismoved to'its dotted line position shown in Fig. 1, thereby' bringing the'actuator e into Contact with the ratchet c, thereby advancing thecontroller f one step toward the electric contact g.""'-The controller fis main-- "tained ateach of its. steps iniadvance by meansof'a-detent'fw (see Fig. 4) which is pressed against the ratchet wheel cby means of the springtz. If the predetermined but adjustable number ofthese steps occurs, then the controller comes info inurl. with theContact g an the loon'i i5 stopped through the usual loom stoppingdevices of which the shipper lever is a reprcsentalhe part; In case,however, less than the predetermined number of advance steps ot' thecontroller 'occurs during the lapse of' a period corresponding to theruiming oll` the loom with a normally lasting supply of weft. then thecontroller f restored to its initial position 'resting againi; the -stopf1. This restoring mechanism for the controller comprises a lever lvwhich is pivoted at u and; which is integral with the detent w; and aunilormly advancing releaser t which carried by a moving disk s turningon the shaft s. As shown, there are several of the releastrs t,projrcting from and uuii'orn'ily spared upon tin heel s. This restoringn'iechanism is timed to reset the controllerA to its initial positionafter the lapse of a period corresponding to the innning ol" the loomwith a norznally lasting supply oi itt-ft. 'lo'this end the wheel srotates slowly by apliropriale -onnei-tions with a moving part of thellonnr 'lhe particular mechanism for thus` rotating the dislc sconstitutes no part of the present invention. lt may be any suitablereducing gearing driven by the usual crank shat't or. cam shaft of theloom, spell gearing being common in. giving a slow motion to a. take-up,as for example, in United States Letters Patent of Crompton & Fitton,No. 787,281, Api-il 1l, 1905; or

for actuating a measuring mechanism such? as is illustrated in UnitedStates Letters' latent to Draper and Northrop, No. 462,919,

November l0, A15391, or in the ,Crompton and lVvman United StatesLetters Patent-No.-

GOJBI, March 1, 1ST-)8, but so timed that one ot the releasers t willsuccessively encounter the detent arm o at definite intervals, each ofwhich roi-responds approximately to the time a single supply of weftshould normally last. When one ot' the releasers t, moving in thedirection. of the'arrow shown in Fig. 1, encounters the detent arm e,the detent w is swung away from the ratchet c, thereby releasingl theratchet, whereupon the con- 'troller f' is reset to its initial positionagainst the stop f1 bythe spring fr.v Assume, therefore, that thecharacter-of the fabric 'being ivoren is such that, there should not befour weft replenislnnents: during the period nrmally required for theexhaustion of a. single supply of weft. In such case, the conlt'rollcr fis so adjusted that it will step in advance four times before reachingthe electric contact. g; If it does make these four f steps, then theloom is automatically stoppedandthe weaver or th fixer can find out-,the

'reason for the frequent change and correct it.. In case, however, lessthan four relvilemshuu-nts occurduring the prescribed interval, then oneof the release-rst comes into action and restores the controller f toits initial position. The .adjustment enables,

tho predetermined number of advance steps ot' the controllernecessary'to bring about the stoppage of the loom to be regulated.Accordingly, the frequency of permissible wclt-replenislnnent Within agiven lterval can be regulated in accordance with 'the character of thecloth being woven.

-. During the definite period which-must?.

o lapse before the restoring mechanism acts, rloth is being woven by theloom which continues its normalfopeations in'weaving unless theprescribed number of actions ofthe \.'eftreplenishing mechanism occursduring the. interval. The frequency of the movemonts of the controlleris irregular and inilf-tinite being determined solely bytheinhater-minutie act-ion of the weft-rcplcmshing mechanism.

I claim l. 'A stopping mechanism for automatic. I

u'eft-replenishing looms having, in combination, a shipper lever; astep-by-step moving controller;4 connecting means between` niflcontroller and shipper lever whereby alter a prtulelcrmined but.adjustable number of advance movements of the controller* l an actuator4for said controller which is between said controllerand loom stoppingcontroller which is moved each .time the weft is replenished to advancesaid controller onestep; anld restoring mechanism for said controllertimed toreset the controller loom with a set the controller to itsinitial position. after 'Y weft-replenishing looms paving, in combi- '30i nation, "loom-Stopping devices, aV step-by- .step moving controller;connecting means between said controller and said stoppingdeviceswhereby afterl a redetermined but adjustable `number of a vancemovements of the controller the loom is stopped; an actuator for saidcontroller which is moved each time the weft is replenished to advancesaid ycontroller onestep; and restoring mechanism Vfor saidcoiitroller,`including a uniformly advancing releaser, timed torethelapse of a period corresponding to the running of the loom with anormally last ing supply of weft.

3i A stopping mechanism for .automatic` nation, loom stopping devices; astep-by- 4step 'moving controller; connecting. means devices wherebyafter a predetermined number of advance movements of the controller theloom isstopped; an actuator for said to its initial position after thelapse of a period corresponding to the running'of the Vnormallylastingsupply of weft.

LA stopping mechanism for automatic weft-replenisliing looms having, incombi-- nation, loom stopping devices; a controller' having step-by-stepmovements occurring at indeterminate intervals; connecting meansbetwecn'said controller` and loom stopping devices whereby-after apredetermined but adjustable number of advance movements of thecontroller the loom is stopped; an actuator for said controller which ismoved each time the weft is replenished to.. advance said controllerone`step; and restoring mechanism for said controller timed to'reset the.controller fto its .initial position after 'the lapse o f a definiteperiod in the weaving of cloth by the loom.

5. A stopping mechanism for automatic weft-replenisliing looms having,in combi? nation, loom stopping devices; a controller having successiveadvance movements occurring at indeterminate intervals; connecting meansbetween said controller andloom stopping devices whereby after apredetermined number of advance movements of the controller thc loom isstopped; an actuator for said controller which is moved-each timet-heweft-is replenished to advance said control- 7'0 ler one' step;andrestoring mechanism for` said controller timed to reset thecontroller to its initial positionafter the lapse of a definite periodin the weaving of cloth by i 6. A stopping mechanism for automaticWeftlreplenishing loomshaving, in combination, loom stopping devices; anlindeterminately movable controller operatively conf neoted with saidloomstopping devices 80 whereby. after a vpredeterniined number ofmovements of the controller the loom is stoppedy an.' actuator for saidcontroller which is moved veach'time the weft is replenished to movesaid controller; and re-. 85

storing mechanism for said controller timed to resettlie controllerafter 'the lapse ofv a `4dciinite period in 4tlieweaving of cloth by theloom.

Signed by me this 7 day of Jul-y 1910. ALBERTGEORG KOECHLIN.VVitn'esses:

' ERNST Bi-rnnn,

i VViLi-r.' SoiiUL'riiUss.

